1002412216591 has 2 divisors, whose sum is σ = 1002412216592. Its totient is φ = 1002412216590.

The previous prime is 1002412216579. The next prime is 1002412216601. The reversal of 1002412216591 is 1956122142001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002412216591 - 2²¹ = 1002410119439 is a prime.

It is a super-2 number, since 2×1002412216591² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002412219591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501206108295 + 501206108296.

It is an arithmetic number, because the mean of its divisors is an integer number (501206108296).

Almost surely, 2^{1002412216591} is an apocalyptic number.

1002412216591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002412216591 is an equidigital number, since it uses as much as digits as its factorization.

1002412216591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

Adding to 1002412216591 its reverse (1956122142001), we get a palindrome (2958534358592).

The spelling of 1002412216591 in words is "one trillion, two billion, four hundred twelve million, two hundred sixteen thousand, five hundred ninety-one".